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Mole Intro and Reaction review

Total questions: 45

Worksheet time: 3hrs 52mins

Name
Class
Date
1.

N2 + 3H2 → 2NH3

What is the mole ratio between N2 and NH3 in the above reaction?

a)

1 moles NH3 / 2 moles N2

b)

2 moles NH3 / 1 moles N2

c)

2 moles N2 / 3 moles NH3

d)

1 moles N2 / 3 moles NH3

2.

Which of the following represent a mole ratio between silver nitrate and copper(II) nitrate reacting? *Write the balanced equation first.

a)

2 mol AgNO3 / 2 mol Ag

b)

2 mol Ag / 2 mol AgNO3

c)

2 mol AgNO3 / 2 mol Cu(NO3)2

d)

2 mol AgNO3 / 1 mol Cu(NO3)2

3.

NH3 + O2-->NO + H2O

Balance the equation first. Then determine what is the total number of moles of H2O produced when 12 mole of NH3 is completely consumed?

a)

15

b)

18

c)

20

d)

24

4.

CO2 + H2O --> C6H12O6 + O2

Balance the equation first. Then determine what is the total number of moles of water needed to make 2.5 moles of C6H12O6?

a)

2.5

b)

6

c)

12

d)

15

5.

Using the following equation:

Fe2O3(s) + H2(g) → Fe(s) + H2O(l)

Balance the equation first. Then determine how many moles of iron can be made from 6 moles H2?

a)

4 moles Fe

b)

6 moles Fe

c)

9 moles Fe

d)

2 moles Fe

6.

N2 + H2 → NH3

Balance the equation first. Then determine how many moles of hydrogen are needed to react with 2 moles of nitrogen?

a)

6

b)

2

c)

3

d)

1

7.

H2 + O2 → H2O

Balance the equation first. Then determine how many moles of water can be produced if 8 moles H2 are used?

a)

4 moles

b)

8 moles

c)

16 moles

d)

2 moles

8.

Using the following equation:

Fe2O3(s) + H2(g) → Fe(s) + H2O(l)

Balance the equation first. Then determine how many moles of iron can be made from 6 moles H2?

a)

4 moles Fe

b)

6 moles Fe

c)

9 moles Fe

d)

2 moles Fe

9.

Given the reaction: 4Al + 3O2 --> 2Al2O3

How many moles of Aluminum oxide, Al2O3, can you produce if you have 2 moles of Al?

a)

3 mole

b)

2 mole

c)

1 mole

d)

0.5 mole

10.
N2 +  3H2 −->  2NH3 
How many moles of ammonia are produced when 3 moles of nitrogen react with hydrogen?
a)
6 moles ammonia
b)
1.5 moles ammonia
c)
9 moles ammonia
d)
9 moles hydrogen
11.
Molar mass is in units of ________.
a)
grams
b)
grams/mole
c)
mole
d)
moles/gram
12.

What is the molar mass of Gold (III) chloride?

a)

96 g

b)

130 g

c)

232.5 g

d)

303.3 g

13.

How many moles are present in 32.3 grams of carbon dioxide ?

a)

44.01 moles

b)

1421.52 moles

c)

32.3 moles

d)

0.73 moles

14.

What is the mass in grams of 5.90 mol octane?

a)

.0512 g

b)

19.4 g

c)

673 g

d)

389 g

15.
How many water molecules are in 5.2 moles of water?
a)
6.02 x 1023
b)
5.2
c)
3.1304 x 1024
d)
8.638 x 10-24
16.

Which compound has the smallest molar mass?

a)

CO

b)

CO2

c)

H2O

d)

H2O2

17.
How many grams are in 3.3 moles of potassium sulfide?
a)
21.6 g
b)
33 g
c)
235 g
d)
3.6x102 g
18.
How many grams are in 11.9 moles of chromium?
a)
50 g
b)
619 g
c)
0.23 g
d)
4.4 g
19.

What is the charge of Iron in this compound.

Fe3(PO4)2

a)

3+

b)

2+

c)

1+

d)

6+

20.

The symbol for a substance dissolved in solution is ______

a)

(s)

b)

(l)

c)

(aq)

d)

(g)

21.

Predict the products of this synthesis reaction: H2 + Cl2 →

a)

HCl

b)

H2Cl2

c)

H2Cl

d)

HCl2

22.

What type of reaction is this?

2 C6H14 + 19 O2 → 12 CO2 + 14 H2O

a)

Single Replacement

b)

Double Replacement

c)

Hydrocarbon Combustion

d)

Decomposition

23.

Predict the product of this synthesis reaction:

Al + S₈ →

a)

AlS

b)

AlS8

c)

Al2S

d)

Al2S3

24.

Predict the products for the decomposition of aluminum oxide, Al2O3 →

a)

Al + O2

b)

O + Al2

c)

Al2 + O3

d)

Al + O

25.
Type of Reaction? 
____ PbSO4 + ____ AgNO3 =>   
a)
Single Replacement
b)
Combustion
c)
Decomposition
d)
Double Replacement
26.

Type of Reaction?

____ HBr + ____ Fe =>

a)

Cationic Single Replacement or Displacement

b)

Combustion

c)

Decomposition

d)

Double Replacement

e)

Anionic Single Replacement or Displacement

27.
Type of Reaction? 
BF4  => B + 2 F2   
a)
Single Replacement
b)
Combustion
c)
Decomposition
d)
Double Replacement
28.

Type of Reaction?

Ca + 2AgCl =>

a)

Cationic Single Displacement

b)

Combustion

c)

Decomposition

d)

Double Replacement

e)

Anionic Single Displacement

29.
Balance the equation: What is the coefficient on the hydrogen gas? 
 H2 + O2 =>    H2O    
a)
2
b)
3
c)
1
d)
4
30.
Which of the following is a product of the equation:

 CaO  +  S  => 
a)
SO
b)
CaOS
c)
O
d)
O2
31.

Which of the following is a product of the equation:


K + N2 =>

a)

KN

b)

K2N

c)

K3N

d)

KN3

32.

Which of the following is a product of the equation:


MgSO4 + NaCl =>

a)

MgCl2

b)

NaMg

c)

NaSO4

d)

MgCl

33.
Balance the equation. What is the coefficient on the hydrobromic acid?
   HBr +  Fe =>  H2 +  FeBr3
a)
1
b)
2
c)
3
d)
6
34.

Balance the equation. What is the coefficient on the silver nitrate?

PbSO4 + AgNO3 => Ag2SO4 + Pb(NO3)2

a)

1

b)

2

c)

3

d)

6

35.
Which of the following is a product of the reaction: 
CuCl2 + H2S => 
a)
Cu
b)
SCl2
c)
HCl
36.
Which of the following is a product of the reaction and BALANCED: 
H2SO4 + KOH  => 
a)
2 H2O 
b)
2 K2SO4
c)
H2O 
d)
KH2
37.
Which of the following is a product of the reaction and BALANCED: 
K + Cl2 => 
a)
Cl
b)
KCl
c)
2 KCl
d)
2 K2Cl
38.
Which of the following is a product of the reaction and BALANCED:
 
Al + O2 => 
a)
2 AlO
b)
AlO
c)
2 Al2O3
d)
Al2O3
39.

Which of the following is a product of the reaction and BALANCED:


H2SO4 + BaCl2 =>

a)

2 BaSO4

b)

2 HCl

c)

HCl

d)

H2Ba

40.
What are the coefficients when the equation is balanced?
a)
2 + 3 --> 2 + 3 + 4
b)
1 + 3 --> 1 + 3 + 2
c)
2 + 4 --> 2 + 3 + 2
d)
1 + 1 --> 1 + 1 + 1
41.
What are the coefficients when the equation is balanced?
a)
1 + 1 + 1 --> 2 + 1 + 3
b)
2 + 2 + 2 --> 4 + 2 + 3
c)
1 + 2 + 1 --> 2 + 2 + 3
d)
1 + 1 + 1 --> 1 + 1 + 1
42.
What element is being reduced?
a)
I
b)
H
H
c)
S
S
d)
O
O
43.
What is oxidation number of Cr in Cr2O72-?
a)
-2
b)
+2
c)
+6
d)
+12
44.
What is oxidation number of Fe in FeO ?
a)
+2
b)
-2
c)
0
d)
+1
45.
What is the oxidation number of N in NO2-1?
a)
-3
b)
+4
c)
-2
d)
+3

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